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时间:2020-03-01
《《机械制造专业英语》教案.doc》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、Unit1EngineeringDrawing一、NewWords:Coordinatesystem:ThebasicofallinputAutoCADistheCartesiancoordinatesystem,andthevariousmethodofinput(absoluteorrelative)relyonthissystem.Coordinatevalue:坐标值Cartesiancoordinateaxes:笛卡尔坐标轴Perpendicularly:垂玄地Projection:投影Orthographicprojection:正投影1.1
2、coordinatesystemCAD=computer-aideddesignFixed:firmlyinposition;stationaryLocate:vt.TodeterminethepositionofPositiveandnegative:Illustrate:toexplainDrafting:n.制图1.2TypesofViewsAuxiliary:辅助视图Detail:n.详图;局部Derived:取得;由来Scaling:enlargescaleClarification:tomakeclearPlanar:tow-Ddrawing
3、Cross-section:横截面Datumplane:基准面Fig.1-3:Brushwithspring:F带弹簧的电刷Handle:手柄Needlebearing:滚针轴承Retainingring:扌肖圈Chuckspacer:夹头衬片-Key:销Symmetrical:对称的Configuration::结构1.3MultiviewdrawingengineeringdrawingisanabstractuniversallanguageusedtorepresentadesignerideatootherHomework:Page9:Exe
4、rcise:1.filltheblankswithaproperwordaccordingtothetext.二.TechnicalReadingThefollowingdiagramshowswhathappensinadisplacertypeStirlingengineduringoneworkingcycle.A.Thepowerpistonisinitslowestandthedisplacerinitshighestposition.Alltheworkinggasisinthecoldspace.B•Thedisplacerisstilli
5、nitshighestposition.Butthepowerpistonhasgoneupandcompressedthegasinthecoldspace.C•Thepowerpistonisnowinitsupperpositionandthedisplacerhaspushedthegasthroughthecooler,theregenerator,andtheheatingpipesintothehotspace.D.Thehotgasisbeingexpanded,andhestenergyisbeingtransformedintomec
6、hanicalenergyasthedisplacerandthepowerpistonarepusheddownintotheirlowestpositions.Thepistonwillstaytherewhilethedisplacerrisesandpushesthegasthroughtheheatingpipes,regeneratorandcoolerintothecoldspace_andwearebackwherewestarted.Words:Diagram:图表Position:位置Stirling:斯特林(咅译)Displacer
7、:置换器Piston:活塞Regenerator:蓄热器Cooler:冷却器Expand:膨胀As:随之hestenergy:热能mechanicalenergy:机械能译文:置换器型斯特林发动机工作循环如下所示:A.置换器在最高位,动力活塞在最低位。所有的工作气体在冷空间;B.置换器不动,动力活塞上升并挤压冷空间的气体;C.动力活塞到达最高位,置换器下移,推动气体经过冷却器、蓄热器、和加热管进入热空间;D.热2膨胀,’閱能转'变成机械能,随Z动力活塞和置换器到达最低位。动力活塞不动,置换器上升推动气体经过加热管、蓄热器和冷却器进入冷空间回到起点。三、G
8、rammar概论(一)什么是翻译?机械工程英语翻译的困难主要存在于正确理解原文的
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